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Finding the Fourth Proportional to 681.99, 939.09 and 583.53

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Solution

The fourth proportional to 681.99, 939.09 and 583.53 is: 803.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.99 : 939.09 = 583.53 : x
  2. Step 2: Convert to fraction form
    681.99/939.09 = 583.53/x
  3. Step 3: Cross multiply
    681.99x = 939.09 × 583.53
  4. Step 4: Simplify right side
    681.99x = 547,987.19
  5. Step 5: Solve for x
    x = 547,987.19/681.99
  6. Step 6: Final answer
    x = 803.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.